Measurement of cryoelectronics heating using a local quantum dot thermometer in silicon
Integrating classical electronics alongside quantum devices in silicon offers the possibility of building truly scalable quantum computers. However, to ensure these hybrid chips succeed, we need to understand how the power dissipated by classical electronics, may affect the qubit devices located in close proximity.
Our work, published in Chip, led by Quantum Engineer and UCL PhD student Mathieu de Kruijf, describes a method to accurately monitor the impact of dissipated power on qubit devices. The method provides a way to determine the available power budget at a distance from a solid-state quantum processor and indicate under which conditions cryoelectronics circuits may allow the operation of hybrid quantum-classical systems.
These findings allow us to understand how these different devices interact and how their placement will affect the operation of our chips. These results will help us develop new designs for our industrially developed hybrid quantum-classical chips.
The Quantum Motion team that achieved this work also includes: Grayson Noah, Alberto Gómez Saiz, John Morton, and M.Fernando González-Zalba.
